The present invention presents methods for reducing the amount of noise
inherent in the reading of a non-volatile storage device by applying an
episodic agitation (e.g. a time varying voltage) to some terminal(s) of
the cell as part of the reading process. Various aspects of the present
invention also extend to devices beyond non-volatile memories. According
to one aspect of the present invention, in addition to the normal voltage
levels applied to the cell as part of the reading process, a time varying
voltage is applied to the cell. A set of exemplary embodiments apply a
single or multiple set of alternating voltages to one or more terminals
of a floating gate memory cell just prior to or during the signal
integration time of a read process. In other embodiments, other
reproducible external or internal agitations which are repeatable, and
whose average effect (from one integration time to the next integration
time) remains sufficiently constant so as to have a net noise reduction
effect is applicable.